Simultaneous high speed digital cinematographic and X-ray radiographic imaging of a intense multi-fluid interaction with rapid phase changes
2009 (English)In: Experimental Thermal and Fluid Science, ISSN 0894-1777, Vol. 33, no 4, 754-763 p.Article in journal (Refereed) Published
As typical for the study of the vapor explosions, the qualitative and quantitative understanding of the phenomena requires visualization of both material and interface dynamics. A new approach to multifluid multiphase visualization is presented with the focus on the development of a synchronized highspeed visualization by digital cinematography and X-ray radiography. The developed system, named SHARP (simultaneous high-speed acquisition of X-ray radiography and photography), and its image processing methodology, directed to an image synchronization procedure and a separate quantification of vapor and molten material dynamics, is presented in this paper. Furthermore, we exploit an intrinsic property of the X-ray radiation, namely the differences in linear mass attenuation coefficients over the beam path through a multi-component system, to characterize the evolution of molten material distribution. Analysis of the data obtained by the SHARP system and image processing procedure developed granted new insights into the physics of the vapor explosion phenomena, as well as, quantitative information of the associated dynamic micro-interactions.
Place, publisher, year, edition, pages
2009. Vol. 33, no 4, 754-763 p.
Rapid multiphase multi-fluid interaction, Vapor explosion, Simultaneous, visualization, High speed imaging, Continuous X-ray, fuel-coolant interactions, neutron-radiography, vapor explosion, water, visualization, fragmentation, droplet, light
IdentifiersURN: urn:nbn:se:kth:diva-18376DOI: 10.1016/j.expthermflusci.2009.01.011ISI: 000265722300019ScopusID: 2-s2.0-72549099529OAI: oai:DiVA.org:kth-18376DiVA: diva2:336422
QC 201005252010-08-052010-08-052011-01-11Bibliographically approved